α-生育酚

Origin

Alpha-tocopherol, also known as vitamin E, is a naturally occurring antioxidant. It can be derived from vegetable oils, nuts, seeds, and green leafy vegetables. Commercially, it is often extracted from soybean oil, sunflower oil, or rapeseed oil. Synthetic alpha-tocopherol is also available, typically produced through chemical synthesis.

Usage

E307 (Alpha-tocopherol) is primarily used as an antioxidant in food products. It helps to prevent the oxidation of fats and oils, which can lead to rancidity and off-flavors. This extends the shelf life of foods and preserves their quality. It is commonly found in vegetable oils, margarine, salad dressings, processed foods, and dietary supplements. Alpha-tocopherol also has nutritional value as a vitamin E source, contributing to the body's antioxidant defenses and overall health. It is also used in cosmetics and pharmaceuticals for its antioxidant properties.

Side Effects

Alpha-tocopherol is generally considered safe for consumption at levels typically found in food. The European Food Safety Authority (EFSA) has established an Acceptable Daily Intake (ADI) of 0.15 mg/kg body weight for d-alpha-tocopherol. High doses of vitamin E supplements (well above the levels found in food) may potentially interfere with blood clotting and increase the risk of bleeding, especially in individuals taking anticoagulant medications. However, such effects are rare with normal dietary intake. Some individuals may experience mild gastrointestinal upset with very high doses. Overall, E307 is considered a safe food additive when used within regulatory limits.